Where to get air in Madison?

[FreediveWI]

I drive back to Milwaukee to do all of my teaching and get all of my gas fills. It also makes it much easier to be a freediver around here- no good shops to worry about getting fills from and the lakes aren't deep enough to warrent scuba gear.

Last night we dove Mendota and had 7 degree water. It gets into the low 80's by time August rolls around- if you stay above the thermocline. If you dive below it, then you will need a dry suit to be most comfortable. Since most of the fish are above the thermocline, you can do some really nice dives in just a 3mm suit. For the good stuff, meaning Great Lakes wreck diving, expect colder temps in the low 40's at depth. The exception is that couple week window we get out on Michigan every August where we get 68 degree water down past 100' when the winds are right. I have had many wreck dives in just a swimming suit during that time of year. 8)

Jon